JPS5847155Y2 - Fitting type concrete joint column - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a fitting type concrete joint column in which at least one upper column is fitted and connected to a lower column via a socket.

In general, poles longer than 17 meters cannot be transported.

Therefore, regardless of the ease of assembly of the steel frame and the material of the steel pipe column or concrete column, joint columns are used for poles that require a length of 17 m or more.

By the way, concrete connecting columns are made by directly inserting the connecting end of the upper column with a small hole into the connecting hole formed at the connecting end of the lower column with a large diameter, and solidifying it with mortar, or by connecting it to the lower column. Connecting hardware is attached to each connecting end of the upper column, and the connecting hardware is welded together.

However, in the former case, in which the connecting end of the upper pillar is inserted into the joint hole formed in the lower pillar and solidified with mortar, etc., (a) the connecting part is placed at a relatively low position within the reach of the worker; When forming a long pole, the lower pole must be made very thick to support the load of the long upper pole, resulting in a stepped pole. (c) Almost all of the loads on the upper column act as a load that splits the connection, and the stress on the concrete column against this load is small. There are many losses due to the disadvantages that it will eventually have to be reinforced with steel pipes, etc., (d) the insertion part of the upper column must be relatively long, the connection part must be reinforced, and workability is poor, etc. It has the disadvantage of increasing costs.

On the other hand, in the case of the latter, that is, attaching the connecting hardware on the top and senryo pillars and welding the connecting hardware together, (e) welding will be done on site, so the labor involved in centering, welding, anti-corrosion treatment, etc., and the equipment used for these will be reduced. , The disadvantage is that the machine must be transported to the site, which increases costs.
After the anti-corrosion treatment, the poles will be raised and erected, so a large space is required for this work on site. The long poles are tilted until this root hardening is completed.
The poles can be erected by supporting the poles to prevent them from falling over and curing the foot protection, or by making solid foundations with insertion holes for the poles in advance, but both of these methods require additional foundation work costs. It has the disadvantage of being bulky.

In order to eliminate all of the above-mentioned drawbacks (a) to (g) of conventional concrete connecting columns, the present invention is easy to manufacture and can be connected by fitting the socket of the upper column to the lower column that has been erected. The purpose is to provide a fitting type concrete joint column.

Next, the configuration of the present invention will be explained based on the embodiments shown in the drawings.

In the illustrated embodiment, the lower pillar 10 and the upper pillar 2 have the same taper.
0.

The lower pillar 10 is made of concrete 11 as shown in FIG.
It is a prestressed concrete column in which prestress is introduced by tightening the prestressed PC steel rod 12 buried inside with a flanged nut 13 at the upper end, which is the connection end.
An end surface 14' of the connecting end 14 is finished so as to be able to come into close contact with an end surface 25' of the connecting end 25 of the upper column 20.

The connecting end 14 of the lower pillar 10 is a metal seat plate 1 formed into a ten-sided petal shape as shown in FIGS. 2 and 3.
5, and the PC steel rod 12 may be tightened with a nut 16. Alternatively, as shown in FIGS. Alternatively, the PC steel rod 12 may be tightened via the nut 16.

On the other hand, the upper pillar 20 is a conch J-) as shown in FIG.
, 21 is tightened at the lower end, which is the connection end 25, via an annular metal seat plate 23 and a nut 24, creating a prestressed concrete column in which prestress is introduced. , end surface 2 of the connecting end 25
5' is finished so that it can be closely joined to the end surface 14' of the connecting end 14 of the lower column 10.

A socket 26 is provided on the outer periphery of the connection end 25 of the upper column 20.
are fitted.

The socket 26 is made of a strong steel plate having corrosion resistance, such as a galvanized steel plate, and is connected to the connecting end 1 of the lower column 10.
4, and the socket 26 is connected to and fixed to the PC steel bar 22 via a reinforcing bar 27.

The socket 26 is reinforced with reinforcing rings 28 that are fitted and welded to the outer peripheries of the upper and lower ends.

In addition to the above-mentioned configuration, when connecting the Senryo pillars 20 and 10 at the pillar erection site, the concrete holes 30 and the pillar erection holes 31 are added at predetermined positions as shown in FIG. The base of the lower column 10 is inserted into the hole 31, concrete is poured into the foundation foot protection concrete hole 31, and the lower column 10 is erected. They shall be arranged and fixed at equal intervals on the circumference.

After the foundation hardening concrete of the lower column 10 hardens, the metal fitting 33 with the ring 34 is fixed to the upper column 20 in advance using the reinforcing ring 28 of the socket 26 to prevent slipping, and the ring 3
4, one end of the wire rope 35 is attached to the upper column 20, and by pulling the wire rope 36 as a control rope, the directions of the upper column 20 and the lower column 10 are aligned, and the connection is made. A socket 26 is provided on the outer periphery of the end portion 14.
Then, the other end of the wire rope 35 and the anchor pole I 32 are connected via a tensioning tool 36 such as a turnbuckle, and the wire rope 35 is tensioned to complete the pole erection.

In this column connecting work, the wire rope 35 serves as a remote control rope for determining the direction and position of the lifted upper column 20 on the ground when fitting it to the lower column 10, and also as a wire rope for remote control. By binding the rope 35 and the anchor bolt 32, and tensioning the wire rope 35 with a tensioning device 36 such as a turnbuckle, chain block, or simmerer,
In addition to the role of press-fitting the upper column 20 to the lower column 10, it also plays the role of adjusting the tension of the wire rope 35 individually to make it vertical without bending at the connecting column part. It is.

The joint pillars connected and erected in the above-mentioned work are the lower pillars 10.
Since the upper column 20 is connected via a socket 26 with an inner diameter that tightly fits on the outer periphery of the connecting end 14 of the upper and lower columns 20. acts as an integral pole, and since the socket 26 is made of a strong steel plate that has corrosion resistance, deterioration of strength over time is prevented.

The present invention exhibits the best effect when applied to 1 1 1 l ] δ to stone seedling taper columns, more preferably to 60 to 7 water taper columns.

In addition, the column is not limited to the two-stage connection shown in the figure, but it is also possible to connect three or more stages.

The present invention has the structure and operation explained above, and the upper column 20
The connection can be made by simply fitting the socket 26 attached to the connecting end 25 of the lower pillar 10 to the connecting end 14 of the erected lower pillar 10, which not only has the effect of significantly simplifying the work at the site, but also reduces the on-site work. This has the advantage of requiring less work space.

Further, in the present invention, the socket 26 is made of a strong steel plate, and the lower column 1
0, and is connected to the PC steel bar 22 via the connecting reinforcing bar 27, so that the lower column 10 and the upper column 20 are integrated into one pole with no steps. Moreover, since the socket 26 has been provided with corrosion resistance in advance, it has the effect of preventing the strength of the connection portion between the upper and lower columns 20, 10 from deteriorating over time.

Furthermore, in the present invention, the upper column 20 is constructed only by connecting and fixing the socket 26 fitted thereto to the PC steel bar 22 with a reinforcing bar 27, and both the socket 26 and the upper column 20 are relatively easy to manufacture. , since the lower column 10 can be easily manufactured in exactly the same manner as an ordinary prestressed concrete column,
The combination of low manufacturing costs and the simplification of on-site work as described above has the effect of significantly reducing costs.

[Brief explanation of the drawing]

Fig. 1 is an exploded partially cutaway front view of the lower column and upper column of an embodiment of the present invention, and Figs. 2 and 3 are enlarged plane views of an embodiment in which the tightening of the PC steel rod of the lower column is different. Figures 4 and 5 are enlarged plan views and longitudinal sectional views of other examples of the same tightening section. Figure 6 is a construction in which the lower pillar is erected and the upper pillar is connected. The explanatory diagram, FIG. 7, is an enlarged view of section A in FIG. 6. 10...Lower column, 12...PC steel bar of lower column, 14...Connection end, 20...Upper column, 22... ...PC steel rod of upper column, 25...
Connection end, 26...Socket, 27...
・Spliced reinforcing bars.

Claims (1)

[Scope of utility model registration request] a lower pillar made of reinforced concrete having a taper, an upper pillar made of reinforced concrete having at least one taper connected to the upper end of the lower pillar, and the lower pillar being attached to the outer surface of the connecting end of the upper pillar; A socket whose upper end is firmly fitted, a reinforcing ring attached to the outer periphery of the socket, a metal fitting engaged with the reinforcing ring and attached to the outer periphery of the socket, and one end fixed to the metal fitting. and a wire rope whose other end is connected to an anchor bolt fixed to the concrete of the lower column via a turnbuckle, and the socket is connected to the concrete of the upper column via a joint reinforcing bar.
A fitting type concrete joint column characterized by being fixed to a C steel bar.